By millee



(No Model.)

H. MILLER.

CHAIR.- No. 301,913. Patented July 15, 1884,.

PATENT FFEGE.

HENRY MILLER, or OHAPPAQUA, NEW YORK.

CHAIR.

SPECIFICATION forming part of Letters Patent No. 301,913, dated July 15,1884:.

Application filed August 13, 1883. (N model.)

To all whom it may concern/.-

Be it known that I, HENRY MILLER, of

Chappaqua, Westchester county, in the State.

of New York, have invented certain new and useful Improvements inOhairs,of which the being changeable to different levels and the axis of theseat being changeable forward and backward. The wedge principle is madeavailable in the connecting and disconnecting parts of the rigidframework.

The accompanying drawings'form a part of this specification, andrepresent what 1' con sider the best means of carryingout the invention.

Figure 1 is a front view, and Fig. 2 a vertical section ,through theentire chair. The succeeding figures represent portions on a largerscale. Fig. 3 is a side View of the upper portion of the rigid framing.Fig. 4 represents that portion of the framing which supports the seat.Fig. 5 is a section through one of the legs and one of thecross-sections firmly connected. Fig. 6 is a corresponding view showingthe same parts detached. Figs. 7 and 8 show modifications. Fig. 7 isafront view, and Fig. 8 a side view.

Similar letters of reference indicate like parts in all the figureswhere they occur.

Ais a rigid frame-work of a chair, made of oak wood or other suitablematerial. Certain portions are designated, when necessary, by additionalmarks of reference, as A A B is my tilting or self-adjusting back,provided with a rigid transverse axis, 7), projecting at each end toform trunnions, which are supported on uprights A,which extend up ateach side of the back. The uprights A are provided with deep recesses aa a formed as indicated in Figs. 2 and 3. The axis 12 may be supportedin either of these recesses. By lifting the back B a little, and movingit for- .ward, it can be taken out of one pair of re-' the-level of theseat.

cesses, a, and after raising and lowering, it may, by areverse movement,be placed either in the recesses a above it, higher, or in the recess alower, than before.

D is my tilting seat. It is mounted on a transverse axis, (1, whichextends out on each side and forms trunnions, by which the seat maybesupported on the side pieces, A

These latter are deeply notched, as indicated by a a a a. (See Figs. '2and 4.) The seat may be supported by means of the trunnions din eitherof the notches. By raising it out of one pair and shifting it toanother, it may be adjusted forward or backward. The seat isself-adjusting by tilting on the axis 01. The tilting motion is allowedwithin certain limits, but is gently restrained. The restraint is due tosprings E E These are secured, respectively, by means of screws 0, onthe uppermost of the front and back,cross-bars, A, which lie a littlebelow form and tension that the seat may tilt but little, if at all,without coming into forcible contact with one of the springs, and itstilting motion being restrained thereby. The seat may be tilted to aconsiderable extent, but only by aforcible compression of one of thesprings E or E The springs abut against (See Figs. 1- and 2.)

They should be of -such the side pieces, D, which form part-of the seatD, and extend smoothly forward and backward thereon, parts being soformed that the axis d may be shifted to the extreme extent forward orbackward without interfering with the action of either spring E or E Theaxis 1) of the back and the axis d of the seat may be each a bar ofround iron or-steel, firinly held in the back and seat, respectively,and turning smoothly in the bearings provided in the fixed parts, asdescribed. Both the upper and the lower of the transverse braces at thefront and the same at the back are designated by similar marks, A Eachis formed at each endwith a dovetailed tenon, A3. (See Figs. 5 and 6.)The uprights of the frame-work are formed with corresponding dovetailedmortises, 00*, (see Figs. 1 and 6,) corresponding in width and'taper tothe tenon A*, but suffi- I00 ciently deeper to allow the wide part ofthe V a key, G, is driven in the lower part of the mortise (0*. Thisholds the parts rigidly together. The key is driven out whenever it isdesired to separate the parts again, in order to pack the chair in asmall compass. The uprights A may be strengthened in the vicinity of therecesses a a a and pockets f by malleable cast-iron or other suiiicientmetallic pieces either on the outer or inner sides, or both. These arelet into the wood, as indicated by dotted lines in Figs. 7 and 8, andsecured by screws. The highest recess, a in the uprights A is providedwith a pocket, f,on its upper 'side, which receives the trunnions 1)whenever a lifting-force is exerted thereon, and holds the back engagedwith the chair, so that the chair may be conveniently carried by meansof the back. The importance of this provision will be obvious.

Modifications maybe made in the forms and proportions shown. The springsE E may be held by other means than the screws indicated. The parts 1)of the seat may be shed with brass or other suitable metal, to avoidwearing or craekingby the action of the springs. Parts of the inventionmay be used without the whole. Additions may be made. I propose to addcasters or rockers. rest extending above the back with any ordinary orsuitable means for adjusting it. The arms can be dispensed with, ifdesired, in any case. Pockets f may be provided in the upper side ofeach of the recesses a a a in the uprights A.

I claim as my invention 1. The tilting seat D D, pivoted on itstrunnions d, and the frame A, having notches a a, 850., combined withcross-bars A, and double springs E 3 secured to said crossbars by screwsor bolts c c, as and for the purposes set forth.

2. The frame A A, having recesses a a", 850., and notches a a a f, incombination with the back 13, having trunnions I), the seat D D, havingtrunnions d, and the springs E E", as and for the purposes set forth.

In testimony whereof I have hereunto set my hand in the presence of twosubscribing witnesses.

HENRY MILLER.

\Vitnesses:

CHARLES R. SEARLE, AOLAND BOYLE.

I propose to add a head-

